Musical call signal telephone attachment



Nov. 25, 1947.

H. D. MAYFIELD MUSICAL CALL SIGNAL TELEPHONE ATTACHMENT Filed Aug. 31, 1945 2 Sheets-Sheet 1 muum/ Inventor 2mm WWW Nov. 25, 1947. MAYHELD 4 2,431,574

I MUSICAL CALL SIGNAL TELEPHONE ATTACHMENT Filed Aug. 31, 1945 2 Sheets-Sheet 2 Patented Nov. 25, 1947 UNITED STATES, PATENT ()FFICE MUSICAL CALL SIGNAL TELEPHONE ATTACHMENT 1 Claim. 1

g The invention relates to a musical telephone call signal telephone attachment, and more especially to a telephone receiving set chime.

The primary object of the invention is the provision of an attachment of this character, wherein the standard telephone call bell of a receiving set will be entirely eliminated and replaces the raucous tone and clatter of the ordinary call bell with a musical tone signal which may be varied to suit the requirements and desires of the individual phone user, the attachment being particularly desirable in an office, home, or other place, and will tend to save jangled nerves caused by sudden blatant ringing of the telephone as is the present-day experience.

Another object of the invention is the provision of an attachment of this character, wherein it replaces the original equipment on the ordinary wall telephone so that a pleasing musical tone audible signal will be had in substitute for bell ringing, thereby leaving one in a relaxed condition to begin conversation rather than startled and perhaps angry as is the case in the call bell ringing now in vogue.

A further object of the invention is the provision of an attachment of this character, which is simple in construction, thoroughly reliable and eflicient in operation, trouble free in service, strong, durable, attractive in appearance and with all working parts concealed from View, and inexpensive to manufacture and install.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose the preferred embodiments of the invention and pointed out in the claim hereunto appended.

In the accompanying drawings:

Figure 1 is a plan view of the attachment constructed in accordance with the invention, its housing or casing being in horizontal section for detail exposure thereof.

Figure 2 is a sectional View taken on the line 2-2 of Figure 1 looking in the direction of the arrows.

Figure 3 is a sectional View taken on a line 3-3 of Figure 2.

Figure 4 is a perspective View of one of the tone bars of the attachment and detached.

Figure 5 is a perspective view of a tone bar with its hanger associated therewith and removed from the gong bar support shown in Figure 4.

Figure 6 is a fragmentary sectional view taken on a line 66 of Figure 5.

Figure 7 is a fragmentary perspective view, exploded, showing the bell proper and. striker fitting therefor.

Figure 8 is a fragmentary plan view of one of the tone bars showing in detail its fitting with the hanger bracket therefor.

Similar reference characters indicate corre-- sponding parts throughout the several views in the drawings.

Referring to the drawings in detail, the attachment constituting the present invention and constructed in accordance therewith comprises an inverted substantially cup-shaped striker or hammer head I0, preferably made from wood, plastic material, hard rubber or other substance and is desired to fit over the ball terminal II of the clapper arm or stem l2 and this terminal ll sounds the bell, not shown, of a telephone set, that is to say, the receiver and transmitter instrument as is now installed for service in an office, home, or other place, the stem or arm I2 being controlled and operated electrically in the usual well known manner. Arranged at opposite side of the clapper stem or'arm l2 are the usual signal bell supporting brackets l3 and adjustably fitted in substitutefor the bell by fasteners I4 is a bridge or supporting bar l5 and the latter spans the path of movement of the clapper stem or arm [2, as is clearly shown in Figure 3 of the drawings.

In the striking path of the terminal Ill on the clapper stem or arm [2 and at opposite sides thereof are tone emitting blades or plate-like keys l8, each through button connection I! are joined to the terminal ends l8 of an inverted substantially T-shaped hanger bracket l9 having a head clip 20 for adjustable fastening thereof to the bar IS in relation thereto. The blades or keys l6 are so arranged relative to the clapper stem or arm l2 at opposite sides thereof in parallel relation to each other for a striking impact thereon by the member ID to effect chime-sound audible in substitute for the bell sound. The blades or keys [6 are made from bell metal or other substance producing a pleasing tone and the same are of different but harmonizing tone when sounded. The buttons I! are in the form of soft rubber gamuts which are inserted in the blades or keys and held fixed therein as best seen in Figure 6 of the drawings.

The clips 20 form friction grips on the bar l5 and the slots 2! receiving the fasteners M for connecting such bar [5 to the brackets l3 permit longitudinal displacement or adjustment of such bar for regulating the bridging position thereof.

the cover or shell 22 and changing such member-1 l0 optionally.

In the working of the attachment a cornbina 3 tion of musical tones will issue and these may be 715* varied to suit the requirement and desiresoithe i individual phone user.

What is claimed is:

An attachment of the kind described,:compris.-I. ing spaced opposed tone emitting keys, an oscil- 2o latingVclapper-having a striking membera resillent shoe frictionally secured on said. striking member for engaging the said keys forithe sounding thereof, 'means supportingthe keys inrtheir 4 related positions with respect to said striking member, adjustable frictionally held brackets for the keys included in said supporting means, and a casing for enclosing the striker member keys 5 and supporting means, said means also including arms secured to said brackets, the ends of said arms being held within said tone emitting keys and a resilient material insulating said ends of said: arms from said keys, .wh'ereby substantially 10 none of the overtones and-tones 'arelost through vibratory transmission through the key supporting l-inks.

HERBERT D. MAYFIELD.

REFERENCES CITED The following-references are of record in the fileof this ;.patent:'

UNITED STATES PATENTS Number Name. Date 1,896,195 a Green etaal..- -l Feb. 7,71933 1,994,559 Bergeron-et al.s.-. Mar..'19, 1 935 2,147,498 Rittenhouse .Feb. 14,1939 2,194,507 r Lordtet al. .Mar.i26, :1 940 

